CESIMAR - CENPAT   25625
CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Unidad Ejecutora - UE
artículos
Título:
Dust concentration in San Jorge Gulf and adjacent shelf (Patagonia, Argentina)
Autor/es:
DE CIAN, ANTONELLA; SORIA, RODRIGO GASPAR; CRESPI-ABRIL, AUGUSTO; BARBIERI, E.S.; GONÇALVES, R.J.; PAPARAZZO, FLAVIO
Revista:
ProScience
Editorial:
Digilabs, Conference Proceedings of ScientEvents
Referencias:
Lugar: Bari; Año: 2018 vol. 5 p. 19 - 24
ISSN:
2283-5954
Resumen:
Patagonia is the major source of aeolian dust into the southern part of the Atlantic Ocean andArgentinean shelf. However, to the best of our knowledge there are no direct measurements in theseregions. The objective of this study is to analyze, for the first time, the spatial distribution of dustconcentration in San Jorge Gulf and adjacent shelf (43ºS-48ºS). Dust concentration was measured on74 stations on an oceanographic survey conducted on board of the R/V Puerto Deseado betweenOctober 28th and November 8th of 2017. Measurements were conducted with a particle counter (PCEPCO1) and the concentration of particles in the air (particles per liter: p/l) was evaluated in sixclasses of particle sizes: 0.3 m, 0.5 m, 1.0 m, 2.5 m, 5.0 m and 10 m. Additionally, data ofrelative humidity and air temperature were obtained. Particle concentrations varied inversely toparticles sizes: the highest concentration was observed for smaller particles and the lowestconcentration was observed for higher particles (mean concentration for 0.3 m: 18500 p/l; 0.5m:7030 p/l; 1.0 m: 1750 p/l; 2.5 m: 390 p/l; 5.0 m: 80 p/l; 10m: 44 p/l). The highest concentrationof particles was measured between 46ºS and 48ºS, while the lowest concentration was measuredbetween 43ºS and 45ºS